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Finding the Fourth Proportional to 231,437.80, 346,983.90 and 126,375.40

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Solution

The fourth proportional to 231,437.80, 346,983.90 and 126,375.40 is: 189,468.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,437.80 : 346,983.90 = 126,375.40 : x
  2. Step 2: Convert to fraction form
    231,437.80/346,983.90 = 126,375.40/x
  3. Step 3: Cross multiply
    231,437.80x = 346,983.90 × 126,375.40
  4. Step 4: Simplify right side
    231,437.80x = 43,850,229,156.06
  5. Step 5: Solve for x
    x = 43,850,229,156.06/231,437.80
  6. Step 6: Final answer
    x = 189,468.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.